because you're concerned, obviously, but global warming. i will tell you, to be upfront with you, i am one of those who is concerned because i do not think that we have adequate answers on what to do with the byproduct of vision. you are thinking, your thoughts on nuclear power and why you think that is so critical, given the direction of our climate? >> we, of different about values, but i think we should try to agreen facts. i think the science of climate change, the basic science is well-established. to look at nuclear power to the backs of the objective risks are also fairly well established. nevers powers is far less risky than coal. and the l.a. yes, there are risks. there's nothing about nuclear power that can be substantially safer.